Treatment of cellulosic materials



United States Patent 1 3,074,814 TREATMENT OF CELLULOSIC MATERIALS Robert Sause and William Elliot Stephen, Manchester,

England, assignors to Imperial Chemical Industries Limited, London, England, a corporation of Great Britain No Drawing. Filed Dec. 23, 1958, Ser. No. 782,358 Claims priority, application Great Britain Jan. 15, 1958 3 Claims. (Cl. 117-1355) This invention relates to the treatment of cellulosic materials with water soluble halogeno-1z3z5-triazine derivatives in order to confer thereon improved properties.

United States Patent 2,892,674 relates to a process for the modification of cellulosic materials which comprises treating cellulosic materials under aqueous alkaline conditions with a non-dyestuff compound, or a mixture of such compounds, containing at least one 1:3 :S-triazine ring the carbons of which carry as substituents two halogen atoms and a residue of a primary or secondary amine bound via the nitrogen atom thereof and containing at least one negatively charged solubilizing group.

The present invention relates to a process for the modification of cellulosic materials under the conditions described above wherein the non-dyestuff compounds employed difier from those of United States Patent 2,892,674 in that each solubilizing group is positively charged or is non-ionic in character.

Thus according to the present invention we provide the improvement in or modification of the invention claimed in United States Patent 2,892,674 which comprises treating cellulosic materials under aqueous alkaline conditions with a non-dyestuif compound, or a mixture of such compounds, containing at least one 1:3:5-triazine ring the carbons of which carry as substituents two halogen atoms and an amino radical which is the residue of a primary or secondary amine bound via the nitrogen atom thereof and containing at least one positively charged solubilizing group or at least one non-ionic solubilizing group.

The positively charged solubilizing group may be for example a quaternary ammonium or phosphonium group and the non-ionic group may be for example a polyalkylene oxide residue or a sugar residue.

By the process of the invention valuable eflects may be imparted to cellulosic textile materials such as improved resistance to attack by micro-organisms, improved softness, water repellancy or anti-soiling properties.

As examples of triazines containing positively charged solubilizing groups which may be used to modify cellulosic textiles according to the process of the invention there may be mentioned for example p-(4:6-dichloro- 1 :3 :5-triazin-2-yl) aminophenyltrimethylammonium bromide, p- 4 6-dibromo-- 3 :5-triazin-2-yl) aminophenyltrimethylammonium iodide, p-(4z6-dichloro-1 :3 :S-triazin-Z- yl) aminophenacyltrimethylammonium chloride, fl-(4z6-dichloro-l :3 :5-triazin-2-yl)aminoethyldiethyl dodecylammonium bromide and fl-(4z6-dichloro-1:3z5-triazin-2-yl) aminoethyldiethyloctadecylammonium bromide.

As examples of triazines containing non-ionizing solubilizing groups which may be used to modify cellulosic textiles there may be mentioned for example the water soluble products carrying a residue of a primary or secondary amine and possessing a polyethenoxy chain made by the reaction of one molecular proportion of a cyanuric halide, advantageously the chloride, with one molecular proportion of an amine of the following general formula:

R is a hydrogen or an alkyl, aralkyl or aryl group and R is a hydrogen or an alkyl, aralkyl or aryl group, at least "ice one of the groups R and R being hydrogen. In place of the polyethenoxy chain the products may contain mixed ethenoxy and 1:2-propenoxy units or mixed ethenoxy and 1:2- or 2:3-butenoxy units.

Of the products containing a non-ionizing solubilizing Example 1 A length of cotton wigan cloth was impregnated in a cold aqueous solution of p-4z6-dichloro-1 :3 :5-triazin-2-yl) aminophenacyltrimethylammonium chloride containing 1.2% sodium bicarbonate so as to deposit on the cloth 1% (calculated on the dry weight of the cloth) of the triazine. The treated fabric was dried at C. for 8 minutes and then washed for 5 minutes at the boil in a solution containing 0.1% of a non-ionic detergent, rinsed and dried. One half of the cloth was leached for 4 hours in cold running water.

The resistance of the leached and unleached fabric to rot and mildew organisms was tested by the mycelial mat test described in the National Bureau of Standards Miscellaneous Publication No. 188. The test organisms used were- For mildew: Mixed spores of Aspcrgillus niger K16, Penicillium italicum K14 and Cladasporium herbarum K3.

For rotting: Spores of Chaetom'ium globosum K17 The leached and unleached materials were found to have improved resistance to these organisms compared with unmodified cotton.

Example 2 A viscose rayon staple fibre fabric was impregnated with a solution containing 0.5 part of fi-(4:6-dichloro- 1 3 :5 -triazine-2-y1) aminoethyldiethyloctadecylammonium bromide and 1 part of sodium bicarbonate in 98.5 parts of water. The pattern was squeezed, baked at 110 C. for 8 minutes and then Washed in a solution containing 0.1% of a non-ionic detergent, rinsed and dried.

The treated fabric possessed a soft handle which was retained after further washing.

Example 3 A cotton wigan cloth was impregnated with a Solution containing 10 parts of the reaction product of one molar proportion of fi-(4z6-dichloro-123:5-triazin-2-ylamino) ethanol with 9 molar proportions of ethylene oxide and 10 parts of sodium carbonate in 80 parts of water and squeezed. It was then heated at C. for 7 minutes and washed in a 0.1 solution of a non-ionic detergent, rinsed and dried.

The resulting modified cotton did not soil as readily as untreated wigan cloth on being washed in the presence of synthetically soiled cotton or on prolonged exposure to the atmosphere.

What We claim is:

1. In processes for modification of cellulosic textile materials, the improvement which consists essentially in a process for treating cellulosic textile materials under aqueous alkaline conditions with a non-dyestuif compound containing at least one 1:3:5-triazine ring,

the 4- and 6-carbon atoms of which carry as substituents two halogen atoms, and

the 2-carbon atom of said triazine ring is substituted by an amino radical selected from the class consisting of primary and secondary amino radicals which carry as substituents at least one member selected frorn the class consisting of quaternary ammonium positively charged solubilizing group, phosphonium positively charged solubilizing group, polyallgylene oxide nonionic solubilizing group, 5 and u a radical nni o l zi group, tached to said amino radical througha carbon atom; d ther a er d y d at r a 2. Process according to claim 1 wherein the non-ionic 10 solubilizjng group is selected from the group consisting of polyethenoxy chain, chains containing ethenoxy units together with propenoxy units, and chains containing ,ethenoxy units together with butenoxy units.

3. Process according to claim 1 wherein the non-ioniz- 15 ing solubilizing group is a glucosylarnine radical.

References Cited in the file of this patent UNITED STATES PATENTS Petersen et a1. Feb. 20, 1940 Muskat et al Mar. 10, 1942 Thurston Aug. 29, 1944 Ashby et a1. Oct. 3, 1950 Luiv-isi Jan. 13, 1959 Aenishaenslim et a1 Mar. 24, 1959 Loo May 19, 1959 Sause et al. June 30, 1959 Moyse et al June 27, 1961 FOREIGN PATENTS Great Britain May 19, 1954 

1. IN PROCESSES FOR MODIFICATION OF CELLULOSIC TEXTILE MATERIALS, THE IMPROVEMENTS WHICH CONSISTS ESSENTIALLY IN PROCESS FOR TREATING CELLULOSIC TEXTILE MATERIALS UNDER AQUEOUS ALKALINE CONDITIONS WITH A NON-DYESTUFF COMPOUND CONTAINING AT LEAST ONE 1:3:5-TRIAZINE RING, THE 4- AND 6-CARBON ATOMS OF WHICH CARRY AS SUBSTIUENTS TWO HALOGEN ATOMS, AND THE 2-CARBON ATOM OF SAID TRIAZINE RING IS SUBSTITUTED BY AN AMINO RADICAL SELECTED FROM THE CLASS CONSISTING OF PRIMARY AND SECONDARY AMINO RADICALS WHICH CARRY AS SUBSTITUENTS AT LEAST ONE MEMBER SELECTED FROM THE CLASS CONSISTING OF QUATERNARY AMMONIUM POSITIVELY CHARGED SOLUBILIZING GROUP, PHOSPHONIUM POSITIVELY CHARGED SOLUBILIZING GROUP, POLYALKYLENE OXIDE NON-IONIC SOLUBILIZING GROUP, AND SUGAR RADICAL NON-IONIC SOLUBILIZING GROUP, ATTACHED TO SAID AMINO RADICA THROUGH A CARBON ATOM; AND THEREAFTER DRYING SAID MATERIAL. 